12 Crest Ave
Alamo 94507 · Unincorporated Contra Costa · Coordinates: 37.88044, -122.05108
Parcel & Assessor
- Lot size:
- 27,393 sq ft (0.63 ac)
- Assessor use:
- Single Family, 2 or more residences on 1 or more site
- Tax rate area:
- 98006
- Addresses on lot:
- 12 CREST AVE
Zoning & Land Use
R-20 — Single Family Residential (Unincorporated Contra Costa)
State Housing Pathways Screen (ADU & SB 9)
- ADU or junior ADULikely eligible
Zoned R-20 (single-family residential): state law allows ADUs where homes are allowed.
- SB 9: two homes on the lotLikely eligible
Zoned R-20, a single-family residential zone.
- SB 9: split into two lotsLikely eligible
Zoned R-20, a single-family residential zone. The lot is 27,393 sq ft by the assessor, room for two lots of at least 1,200 sq ft, each at least 40% of the original.
Mapped Hazard Zones on This Lot
- CAL FIRE Fire Hazard Severity Zone
- Not in a State-mapped fire hazard severity zone
- FEMA National Flood Hazard Layer
- Zone X: minimal flood hazard (all of the lot) · FIRM panel 06013C0293G, effective March 21, 2017
- CGS Alquist-Priolo Earthquake Fault Zone
- Not in an Alquist-Priolo Earthquake Fault Zone
Surrounding Rent & Value Benchmarks (Public Records)
Range: $2,399,000 – $3,245,000 · Status: Off market
HUD Small Area FMR (ZIP 94507) · FY 2026
Studio $2,610 · 1BR $2,910 · 2BR $3,550 · 3BR $4,540 · 4BR $5,380
Nearby Activity (½ mile radius, since —)
7 active or recent development projects (7 housing units across completed, permitted, and pipeline stages) and 0 total building permits recorded within ½ mile.
Developments Deserving Closer Investigation & Active Area Builders
- New home (Issued)On this parcel
Active in "Issued" for 23 mo (first record Nov 14, 2024) with no new permit activity recorded in 23 mo.
- 2 new homes (Issued)On this parcel
Active in "Issued" for 2.3 yr (first record Jul 9, 2024) with no new permit activity recorded in 2.3 yr.
- New home (Entitled)On this parcel
Active in "Entitled" for 2.3 yr (first record Jul 9, 2024) with no new permit activity recorded in 2.3 yr.
- New home (Issued)On this parcel
Active in "Issued" for 3.8 yr (first record Jan 9, 2023) with no new permit activity recorded in 3.8 yr.
Permit & Project History on This Parcel (0 permits, 5 grouped projects)
No building permits recorded on this parcel in our dataset.
State HCD Housing Element APR records on this parcel: 5 entries (report years 2023, 2024).